package com.frxuexi.apps.view

import android.os.Environment
import android.util.Log
import android.widget.Toast
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.lazy.grid.GridCells
import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
import androidx.compose.foundation.lazy.grid.items
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.ArrowBack
import androidx.compose.material3.AlertDialog
import androidx.compose.material3.CircularProgressIndicator
import androidx.compose.material3.Icon
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Text
import androidx.compose.material3.TextButton
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.runtime.snapshots.SnapshotStateList
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import androidx.hilt.navigation.compose.hiltViewModel
import androidx.navigation.NavHostController
import coil.compose.AsyncImage
import com.blankj.utilcode.util.ToastUtils
import com.frxuexi.apps.AppsIntent
import com.frxuexi.apps.AppsViewModel
import com.frxuexi.apps.entity.AppsData
import com.frxuexi.apps.entity.AppsEntity
import com.frxuexi.lib_base.BaseApp
import com.frxuexi.lib_base.MyTitleBar
import com.frxuexi.lib_base.RequestType
import com.frxuexi.lib_base.UiState
import kotlinx.coroutines.launch
import java.io.File

@Composable
fun AppsPage(navHostController: NavHostController,vm:AppsViewModel= hiltViewModel()) {

    var list = remember {
        SnapshotStateList<AppsData>()
    }
    //是否显示进度框
    var isShowProcess by remember {
        mutableStateOf(false)
    }

    LaunchedEffect(key1 = "", block = {
        launch {
            vm.uiState.collect{
                when(it){
                    is UiState.onSuccess<*> ->{
                        if(it.type==RequestType.DEFAULT){
                            Log.i("===",it.data.toString())
                            list.addAll(it.data as Collection<AppsData>)
                        }else if(it.type==RequestType.DOWNLOAD){
                            Log.i("===","下载成功")
                            isShowProcess=false
                            ToastUtils.showLong("下载成功")
                        }

                    }
                    is UiState.onError->{
                        Log.i("===",it.msg)
                    }
                    else->{}
                }

            }
        }
        vm.sendIntent(AppsIntent.getClientApps(mapOf("userId" to 1,"page" to 1)))
    })


    Box(contentAlignment=Alignment.Center){
        Column {
            MyTitleBar(title = "在线应用", navHostController =navHostController )
            list.forEach {
                Column {
                    Text(text = it.title)
                    LazyVerticalGrid(modifier = Modifier.padding(vertical = 5.dp), verticalArrangement= Arrangement.spacedBy(5.dp),columns = GridCells.Fixed(3), content = {
                        items(it.appsList){entity->
                            AppsItem(entity = entity,vm){//点击确认下载，就显示进度框
                                isShowProcess=true
                            }
                        }
                    })
                }
            }
        }
        if(isShowProcess){
            CircularProgressIndicator(
                modifier = Modifier.width(64.dp),
                color = MaterialTheme.colorScheme.secondary,
                trackColor = MaterialTheme.colorScheme.surfaceVariant,
            )
        }
    }


}

@Composable
fun AppsItem(entity: AppsEntity,vm:AppsViewModel,onClick: () -> Unit){
    var isShow by remember {
        mutableStateOf(false)
    }
    val dir = BaseApp.context.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS)
    Column (horizontalAlignment = Alignment.CenterHorizontally, modifier = Modifier.clickable { isShow=true }){
        AsyncImage(model = entity.appIcon, contentDescription = "", modifier = Modifier.size(40.dp))
        Spacer(modifier = Modifier.height(2.dp))
        Text(text = entity.appName)
    }
    
    if(isShow){
        AlertDialog(onDismissRequest = { isShow = false },
            confirmButton = { TextButton(onClick = {
                //发送下载意图
                vm.sendIntent(AppsIntent.downloadApk( entity.apkUrl,File(dir,entity.appName+".apk")))
                isShow=false
                onClick()
            }) {
            Text(text = "确认")
        } },
            title = { Text(text = "下载")},
            text = { Text(text = "确认要下载 ${entity.appName} 吗？")},
            dismissButton={ TextButton(onClick = { isShow = false }) {
                Text(text = "取消")
            }})
    }
    
}